Square D PowerPact QBL32250 Q-Frame 3P 250A MCCB Lug 80%
250A Frame | 250A | 3P | 10kA@240Vac | Thermal-Magnetic (Fixed)
The Square D PowerPact QBL32250 represents the Q-Frame series of compact 250A-class molded case circuit breakers, combining robust thermal-magnetic protection with versatile mounting options. This 3-pole device is rated at 250A with 240V AC voltage capability and an interrupting capacity of 10kA@240Vac. It features fixed thermal-magnetic trip elements in each pole, providing both overload (thermal) and short-circuit (magnetic) protection calibrated at 40 degrees Celsius ambient temperature, rated at 80% continuous current per NEC Article 240.6. The QBL32250 is configured with box-type lug connections accommodating 4 AWG-300 kcmil Cu only conductors for reliable cable termination. This device is UL 489 listed, CSA C22.2 No.5 certified, and NOM approved for use across North American installations, with an over-center toggle mechanism providing quick-make quick-break operation and trip-free functionality. Engineers and contractors rely on the QBL32250 for its proven track record of reliability, ease of installation, and comprehensive protection capabilities in low-voltage systems. The breaker operates reliably at ambient temperatures up to 40 degrees Celsius with correction factors available for higher temperature environments. Physical dimensions of 6.47" H x 4.50" W x 4.25" D with an approximate weight of ~4 lbs ensure compatibility with standard enclosures and panelboards. Field-installable accessories include handle padlock attachments (QBPA), service barriers (QSB2/QSB3), and mechanical interlock kits (QBMIK) for enhanced safety.
Key Features
This PowerPact MCCB features Thermal-Magnetic (Fixed) trip protection rated 250A at 240V AC. Frame size: 250A. Interrupting capacity: 10kA@240Vac. Designed for reliable overcurrent protection in industrial and commercial power distribution systems.
Applications
Suitable for main distribution panels, motor control centers, switchboards, and feeder circuit protection in industrial facilities, data centers, and commercial buildings. Compliant with UL 489, CSA C22.2 No.5-02, NOM-003-SCFI, NEMA AB-1.
